The VX-2 IER Scout Rifle Scope is designed to provide with a lifetime of high performance from America's Optics Authority. The Scout features Leupold's Quantum Optical System that takes state-of-the-art optical and mechanical design software and manufacturing to give you razor sharp clarity and enhanced light transmission. Leupold uses their index matched lens system to specifically coat each lens based on the index of refraction. The end result is unparalleled brightness and extremely sharp resolution across the entire visual field. Waterproofing is accomplished with their 2nd generation argon/krypton waterproofing. It works better than the already proven nitrogen gas and also nearly eliminates the effects of thermal shock. To keep your scope clear for a lifetime, DiamondCoat on the exterior lenses provides the ultimate in abrasion resistance and light transmission. No need to panic when your trophy presents a shot, the generous eyebox means you can quickly achieve a full, clear sight picture. The ¼ MOA turrets make it easy to dial in the right elevation and the blackened lens edges reduce unwanted glare so you get a crisp sight picture as you take your shot. Take along the VX-2 IER Scout on your next adventure and know your scope isn't going to let you down.